BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	s_name,
	count(*) as numwait
from
	supplier,
	lineitem l1,
	orders,
	nation
where
	s_suppkey = l1.l_suppkey
	and o_orderkey = l1.l_orderkey
	and o_orderstatus = 'F'
	and l1.l_receiptdate > l1.l_commitdate
	and exists (
		select
			*
		from
			lineitem l2
		where
			l2.l_orderkey = l1.l_orderkey
			and l2.l_suppkey <> l1.l_suppkey
	)
	and not exists (
		select
			*
		from
			lineitem l3
		where
			l3.l_orderkey = l1.l_orderkey
			and l3.l_suppkey <> l1.l_suppkey
			and l3.l_receiptdate > l3.l_commitdate
	)
	and s_nationkey = n_nationkey
	and n_name = 'CHINA'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4813708.86..4813708.87 rows=1 width=26) (actual time=158638.572..158638.603 rows=100 loops=1)
   Buffers: shared hit=9994022 read=1538967 dirtied=33 written=20831, temp read=161677 written=161671
   ->  Sort  (cost=4813708.86..4813708.87 rows=1 width=26) (actual time=158638.568..158638.582 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=9994022 read=1538967 dirtied=33 written=20831, temp read=161677 written=161671
         ->  HashAggregate  (cost=4813708.84..4813708.85 rows=1 width=26) (actual time=158631.417..158633.904 rows=3988 loops=1)
               Buffers: shared hit=9994014 read=1538967 dirtied=33 written=20831, temp read=161677 written=161671
               ->  Nested Loop Anti Join  (cost=2659811.10..4813708.84 rows=1 width=26) (actual time=56292.083..158352.353 rows=39961 loops=1)
                     Buffers: shared hit=9994014 read=1538967 dirtied=33 written=20831, temp read=161677 written=161671
                     ->  Nested Loop  (cost=2659811.10..4813693.89 rows=1 width=34) (actual time=56291.010..137299.376 rows=705871 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7131497 read=856997 dirtied=33 written=1971, temp read=161677 written=161671
                           ->  Hash Semi Join  (cost=2659811.10..4813691.93 rows=1 width=38) (actual time=56290.286..119059.865 rows=1460360 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 378102
                                 Buffers: shared hit=1316466 read=822605 dirtied=24 written=27, temp read=161677 written=161671
                                 ->  Hash Join  (cost=2441.58..1906355.77 rows=802215 width=34) (actual time=38.721..48654.135 rows=1514372 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=652639 read=417824
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1820684.40 rows=20055371 width=8) (actual time=0.055..32213.614 rows=37966418 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078961
                                             Buffers: shared hit=650798 read=417810
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=38.597..38.597 rows=3988 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 250kB
                                             Buffers: shared hit=1838 read=14
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=1.894..36.110 rows=3988 loops=1)
                                                   Buffers: shared hit=1838 read=14
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.027..0.032 rows=1 loops=1)
                                                         Filter: (n_name = 'CHINA'::bpchar)
                                                         Rows Removed by Filter: 24
                                                         Buffers: shared hit=1
                                                   ->  Bitmap Heap Scan on supplier  (cost=79.26..2350.26 rows=4000 width=34) (actual time=1.860..34.496 rows=3988 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1837 read=14
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.453..1.453 rows=3988 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=14
                                 ->  Hash  (cost=1670269.12..1670269.12 rows=60166112 width=8) (actual time=56215.450..56215.450 rows=60045379 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586617kB
                                       Buffers: shared hit=663827 read=404781 dirtied=24 written=27, temp written=153903
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1670269.12 rows=60166112 width=8) (actual time=0.032..28774.228 rows=60045379 loops=1)
                                             Buffers: shared hit=663827 read=404781 dirtied=24 written=27
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.95 rows=1 width=4) (actual time=0.011..0.011 rows=0 loops=1460360)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5815031 read=34392 dirtied=9 written=1944
                     ->  Index Scan using pk_lineitem on lineitem l3  (cost=0.00..7.45 rows=5 width=8) (actual time=0.029..0.029 rows=1 loops=705871)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: ((l_receiptdate > l_commitdate) AND (l_suppkey <> l1.l_suppkey))
                           Rows Removed by Filter: 1
                           Buffers: shared hit=2862517 read=681970 written=18860
 Total runtime: 158640.291 ms
(56 rows)

COMMIT;
COMMIT